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The Stellar Populations of Pixels and Frames [PDF]

open access: yesThe Astronomical Journal, 1998
28 pages, LaTeX file using aasms4.sty, 2 postscript figures To appear on: The Astronomical ...
Alvio Renzini, Alvio Renzini
openaire   +3 more sources

Stellar populations

open access: yes, 2013
This is a summary of my lectures during the 2011 IAC Winter School in Puerto de la Cruz. I give an introduction to the field of stellar populations in galaxies, and highlight some new results. Since the title of the Winter School was {\it Secular Evolution of Galaxies} I mostly concentrate on nearby galaxies, which are best suited to study this theme ...
openaire   +3 more sources

Stellar populations in active galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
To appear in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei", T. Storchi Bergmann, L.C. Ho & H.R. Schmitt, eds., Proc IAU Symp 222 (Cambridge University Press)
openaire   +2 more sources

Stellar populations in normal galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
6 pages, 4 figures, in Proceedings of the IAU Symposium No. 222 "The Interplay Among Black Holes, Stars, and ISM in Galactic Nuclei", eds. T. Storchi-Bergmann, L.C. Ho, and H.R.
openaire   +4 more sources

The Average Stellar Population Age and Metallicity of Intermediate-redshift Quiescent Galaxies

open access: yesThe Astrophysical Journal
The HectoMAP spectroscopic survey provides a unique mass-limited sample of more than 35,000 quiescent galaxies ( D _n 4000 > 1.5) covering the redshift range 0.2  10 ^11 M _⊙ ) assemble the bulk of their stars at earlier epochs.
Ivana Damjanov   +2 more
doaj   +1 more source

Stellar Collisions in the Galactic Center: Massive Stars, Collision Remnants, and Missing Red Giants

open access: yesThe Astrophysical Journal, 2023
Like most galaxies, the Milky Way harbors a supermassive black hole (SMBH) at its center, surrounded by a nuclear star cluster. In this dense star cluster, direct collisions can occur between stars before they evolve off the main sequence.
Sanaea C. Rose   +3 more
doaj   +1 more source

Do Red Galaxies Form More Stars than Blue Galaxies?

open access: yesThe Astrophysical Journal
A new model is proposed in which typical galaxies form most of their stellar mass in a phase with an intrinsically red stellar population. In the standard picture, galaxies with intrinsically red stellar populations are believed to have old stellar ...
Charles L. Steinhardt
doaj   +1 more source

Spatially Resolved Analysis of Stellar Populations in NGC 2992: Impact of Active Galactic Nucleus Feedback

open access: yesThe Astrophysical Journal
In NGC 2992, a galaxy-scale ionized gas outflow driven by active galactic nuclei (AGNs) has long been recognized, yet its impact on the host galaxy has remained elusive.
Xiaoyu Xu   +3 more
doaj   +1 more source

On the complex stellar populations of ancient stellar systems [PDF]

open access: yes, 2018
Het bestuderen van oeroude sterren in hedendaagse, nabije sterrenstelsels om hun geschiedenis te reconstrueren valt onder de noemer van stellaire archeologie. In de afgelopen jaren hebben nauwkeurige observaties onthuld dat veel oude sterrensystemen in de buurt van de Melkweg complexer zijn dan daarvoor was aangenomen.
openaire   +3 more sources

Alpha Element Populations Among Local Halo Stars

open access: yesThe Astronomical Journal, 2023
Previous studies have shown that the halo of the Milky Way galaxy is made up of two distinct stellar populations, one from dissipative collapse and the other accreted.
Michael V. Reinhard, John B. Laird
doaj   +1 more source

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